CN217111058U - Liquid level sensor and battery pack leakage fault monitoring system - Google Patents
Liquid level sensor and battery pack leakage fault monitoring system Download PDFInfo
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- CN217111058U CN217111058U CN202220851503.XU CN202220851503U CN217111058U CN 217111058 U CN217111058 U CN 217111058U CN 202220851503 U CN202220851503 U CN 202220851503U CN 217111058 U CN217111058 U CN 217111058U
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Abstract
The utility model relates to a liquid level sensor and a battery pack leakage fault monitoring system, in particular to a liquid level sensor, which comprises a monitoring unit, a liquid level sensor and a liquid level sensor control unit, wherein the monitoring unit comprises a first detection terminal and a second detection terminal, and a resistor is connected between the first detection terminal and the second detection terminal; the first detection terminal is connected with a first signal wire, and the second detection terminal is connected with a second signal wire; the frame body is used for fixing the monitoring unit; a first detection terminal and a second detection terminal are arranged in the frame at intervals, and the end part of the first detection terminal and the end part of the second detection terminal are both protruded out of the bottom end face of the frame; when the first detection terminal and the second detection terminal are both in contact with liquid, the first detection terminal and the second detection terminal are conducted, and when the resistance value between the first detection terminal and the second detection terminal changes, a liquid leakage fault is indicated. The utility model discloses not only the size is little, and the precision is high, also can be according to in good time adjustment mounting means of in service behavior.
Description
Technical Field
The utility model relates to a sensor part technical field that new energy automobile battery package was used especially indicates a level sensor and battery package weeping fault monitoring system.
Background
The battery pack is used as a core component of the new energy automobile, the safety protection level of the battery pack reaches IP67, and the battery pack has a water soaking capacity for a certain time. However, due to external reasons such as collision of the battery, aging of the product and the like, the battery pack is easily damaged, and further, liquid leakage or water inflow of the battery pack is caused, so that safety accidents are caused.
At present, the battery pack cooling mode generally adopts liquid cooling, the liquid cooling is mainly connected with a water pump of the whole vehicle through a liquid cooling plate and a water pipe, corresponding liquid refrigerants, generally water or a mixture of water and organic alcohol, are injected into the water pipe and the cold plate, and the water pump controls the circulation of the liquid. Strict sealing requirements are provided for the water cooling plate, the water pipe and the water pipe joint, and liquid leakage is prevented. In the driving process of the new energy automobile, the new energy automobile is inevitably subjected to unavoidable working conditions such as vibration and impact, so that the cooling liquid is leaked, and further safety accidents are caused.
In summary, it is very necessary to design a device suitable for monitoring leakage faults of a battery pack of a new energy vehicle, however, the conventional leakage fault monitoring device has a large volume and a single installation mode, and is not easy to adjust according to actual conditions, thereby causing waste of the space of the battery pack undoubtedly.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model discloses a level sensor and battery package weeping fault monitoring system.
The utility model discloses the technical scheme who adopts as follows:
a liquid level sensor comprises
The monitoring unit comprises a first detection terminal and a second detection terminal, and a resistor is connected between the first detection terminal and the second detection terminal; the first detection terminal is connected with a first signal wire, and the second detection terminal is connected with a second signal wire;
a frame for fixing the monitoring unit; the first detection terminal and the second detection terminal are arranged in the frame at intervals, and the end part of the first detection terminal and the end part of the second detection terminal both protrude out of the bottom end face of the frame;
when the first detection terminal and the second detection terminal are both in contact with liquid, the first detection terminal and the second detection terminal are conducted, and when the resistance value between the first detection terminal and the second detection terminal changes, a liquid leakage fault is indicated.
The method is further technically characterized in that: the resistor is a chip resistor, the chip resistor is arranged on a circuit board, and the chip resistor is connected with the first detection terminal and the second detection terminal through the circuit board respectively.
The method is further technically characterized in that: the first signal line with the second signal line sets up first joint and detains and the second joint is detained, first joint detain with the second joint is detained equal butt the inner wall of framework.
The method is further technically characterized in that: the bottom of the frame body is provided with a plurality of support legs, the support legs support the frame body, and the frame body is erected on the bottom of the frame body through the support legs to form a detection cavity.
The method is further technically characterized in that: and elastic pieces are respectively arranged on two sides of the frame body.
The method is further technically characterized in that: the head end of the elastic sheet is also provided with a convex block protruding along the length direction of the elastic sheet.
The method is further technically characterized in that: the top of the frame body is provided with a connecting fixing piece.
The method is further technically characterized in that: the connecting and fixing piece is provided with a fixing hole.
The method is further technically characterized in that: the bottom of the connecting and fixing piece is provided with at least one positioning column.
The battery pack leakage fault monitoring system comprises a battery management system, wherein the battery management system is in signal connection with the liquid level sensor, and the battery management system feeds back the resistance value of the liquid level sensor.
Compared with the prior art, the technical scheme of the utility model have following advantage:
1. the utility model discloses a level sensor, the purpose whether leakage of monitoring battery package, reliable and stable is in order to reach the monitoring resistance.
2. The utility model discloses the size is little, and the precision is high, has multiple mounting means, can be according to in good time adjustment mounting means of in service behavior.
Drawings
In order to make the content of the present invention more clearly understood, the present invention will be described in further detail with reference to the following embodiments of the present invention, in conjunction with the accompanying drawings.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the frame body.
Fig. 3 is a side view of the frame body.
Fig. 4 is a schematic structural diagram of the monitoring unit.
Fig. 5 is a top view of the monitoring unit.
The specification reference numbers indicate: 11. a frame body; 111. a support leg; 12. an elastic sheet; 121. a bump; 13. a card slot; 14. connecting a fixing sheet; 141. a fixing hole; 15. a positioning column; 21. a first detection terminal; 22. a second detection terminal; 23. a circuit board; 24. a first snap fastener; 25. a second snap fastener; 31. a first signal line; 32. a second signal line.
Detailed Description
The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.
The foregoing and other features, aspects and utilities of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings. Directional terms as referred to in the following examples, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Therefore, the directional terminology used is for the purpose of description and is not intended to be limiting, and moreover, like reference numerals will be used to refer to like elements throughout.
Example 1:
with reference to FIGS. 1-5, a liquid level sensor includes
And a monitoring unit including a first detection terminal 21 and a second detection terminal 22, wherein a resistor is connected between the first detection terminal 21 and the second detection terminal 22. The first signal line 31 is connected to the first detection terminal 21, and the second signal line 32 is connected to the second detection terminal 22.
And a frame 11 for fixing the monitoring unit. The first detection terminal 21 and the second detection terminal 22 are disposed at an interval in the frame 11, and both the end of the first detection terminal 21 and the end of the second detection terminal 22 protrude from the bottom end face of the frame 11.
When the first detection terminal 21 and the second detection terminal 22 both contact the liquid, the first detection terminal 21 and the second detection terminal 22 are conducted, and when the resistance value between the first detection terminal 21 and the second detection terminal 22 changes, a liquid leakage fault is indicated.
In the liquid level sensor provided above, when the first detection terminal 21 and the second detection terminal 22 both contact liquid, the first detection terminal 21 and the second detection terminal 22 are conducted. When the first detection terminal 21 and the second detection terminal 22 are conducted, the resistance value between the two terminals changes, and when the resistance value changes, the battery pack leakage fault is indicated.
In this embodiment, the resistor is a chip resistor, the chip resistor is disposed on the circuit board 23, and the chip resistor is connected to the first detection terminal 21 and the second detection terminal 22 through the circuit board 23.
In this embodiment, the first signal line 31 and the second signal line 32 are provided with a first snap fastener 24 and a second snap fastener 25, and the first snap fastener 24 and the second snap fastener 25 are both abutted against the inner wall of the frame body 11.
In the present embodiment, the first detection terminal 21, the second detection terminal 22, and the resistor are fixed in the housing 11 by potting.
In this embodiment, a plurality of legs 111 are provided at the bottom of the frame 11, the legs 111 support the frame 11, and the frame 11 forms a detection chamber by making the legs 111 stand on the bottom of the frame 11. Meanwhile, the legs 111 can protect the first and second detection terminals 21 and 22.
In this embodiment, a top of the frame 11 is provided with a locking slot 13, and the locking slot 13 is used for locking and connecting the fixing piece 14.
In this embodiment, the two sides of the frame 11 are respectively provided with the elastic pieces 12, the ends of the elastic pieces 12 are fixedly connected with the frame 11, and a gap is provided between the head end of each elastic piece 12 and the frame 11.
In the present embodiment, in order to improve the fixing effect of the elastic sheet 12, the head end of the elastic sheet 12 is further provided with a projection 121 projecting in the longitudinal direction of the elastic sheet 12. When the liquid level sensor is fixed in the liquid level sensor mounting groove, the convex block 121 at the head end of the elastic sheet 12 is clamped in the groove of the inner wall of the sensor mounting groove of the battery pack.
In this embodiment, a fixing piece 14 is provided on the top of the frame 11, the plane of the fixing piece 14 is perpendicular to the plane of the frame 11, and the fixing piece 14 is used to fix the frame 11.
In this embodiment, the connecting and fixing plate 14 is provided with a fixing hole 141, the fixing hole 141 is used for fixing a mounting bolt, and the bolt can pass through the fixing hole 141, so as to fix the connecting plate 14 in the liquid level sensor mounting groove reserved in the battery pack.
In this embodiment, in order to prevent the bolt from loosening, at least one positioning post 15 is provided at the bottom of the connection fixing piece 14. Specifically, two positioning posts 15 are provided at the bottom of the connection fixing piece 14. When the liquid level sensor is used, the mounting plane connected with the fixing piece 14 can be provided with a positioning column hole, and when the positioning column 15 is inserted into the positioning column hole, the liquid level sensor cannot move left and right even if the bolt is loosened.
Example 2:
the battery pack leakage fault monitoring system comprises a battery management system, wherein the battery management system is in signal connection with the liquid level sensor, and the battery management system feeds back the resistance value of the liquid level sensor. The battery management system monitors whether the battery pack has a liquid leakage fault according to the resistance value, and then takes corresponding treatment measures to avoid causing safety accidents.
Specifically, when the liquid level sensor is used, the first signal line 31 and the second signal line 32 are both in communication connection with a battery management system, the battery management system monitors the resistance value of a resistor between the two detection terminals through the first signal line 31 and the second signal line 32, and the liquid level sensor is fixedly installed at a position where liquid leakage or water inflow easily occurs in a battery pack, such as the lowest point in the battery pack, a water pipe joint and the like.
The utility model discloses an installation as follows:
(1) the liquid level sensor is fixedly installed in a first mode:
during the use, extrude the flexure strip 12 of the framework left and right sides, make the head end of flexure strip 12 press close to framework 11, then insert the level sensor mounting groove that the battery package was reserved with the head end of framework 11 and flexure strip 12 in, treat that the head end of the flexure strip 12 of the framework 11 left and right sides inserts behind the level sensor mounting groove, break away from the flexure strip 11 head end in the extrusion and reset to both sides, in the lug 121 card of flexure strip 12 head end goes into the recess of battery package sensor mounting groove inner wall, fixed mounting level sensor.
(2) A liquid level sensor is fixedly mounted in a second mode:
the connecting and fixing piece 14 is clamped into the clamping groove 13, the bolt penetrates through the connecting and fixing hole 141, the connecting and fixing piece 14 is fixed on the mounting plane of the connecting and fixing piece 14 through a screw, and therefore the liquid level sensor is fixedly mounted, and the connecting and fixing piece 14 and/or the clamping groove 13 can be pre-coated with glue.
When the liquid level sensor is not required to be fixed by the fixing plate 14, the connecting fixing plate 14 can be separated from the clamping groove 13.
In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly specified or limited, the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.
Claims (10)
1. A liquid level sensor, characterized by: comprises that
The monitoring unit comprises a first detection terminal (21) and a second detection terminal (22), and a resistor is connected between the first detection terminal (21) and the second detection terminal (22); a first signal line (31) is connected to the first detection terminal (21), and a second signal line (32) is connected to the second detection terminal (22);
a frame (11) for fixing the monitoring unit; the first detection terminal (21) and the second detection terminal (22) are arranged in the frame body (11) at intervals, and the end part of the first detection terminal (21) and the end part of the second detection terminal (22) both protrude out of the bottom end face of the frame body (11);
when the first detection terminal (21) and the second detection terminal (22) are both in contact with liquid, the first detection terminal (21) and the second detection terminal (22) are conducted, and when the resistance value between the first detection terminal (21) and the second detection terminal (22) changes, a liquid leakage fault is indicated.
2. The fluid level sensor of claim 1, wherein: the resistor is a chip resistor, the chip resistor is arranged on a circuit board (23), and the chip resistor is respectively connected with the first detection terminal (21) and the second detection terminal (22) through the circuit board (23).
3. The fluid level sensor of claim 1, wherein: first signal line (31) with second signal line (32) set up first joint and detain (24) and second joint and detain (25), first joint detain (24) with the second joint is detained (25) and is all the butt the inner wall of framework (11).
4. The fluid level sensor of claim 1, wherein: the bottom of the frame body (11) is provided with a plurality of support legs (111), the frame body (11) is supported by the support legs (111), and the frame body (11) is erected on the bottom of the frame body (11) through the support legs (111) to form a detection cavity.
5. The fluid level sensor of claim 1, wherein: elastic pieces (12) are respectively arranged on two sides of the frame body (11).
6. The fluid level sensor of claim 5, wherein: the head end of the elastic piece (12) is also provided with a convex block (121) protruding along the length direction of the elastic piece (12).
7. The fluid level sensor of claim 1, wherein: the top of the frame body (11) is provided with a connecting and fixing piece (14).
8. The fluid level sensor of claim 7, wherein: the connecting and fixing piece (14) is provided with a fixing hole (141).
9. The fluid level sensor of claim 7, wherein: the bottom of the connecting and fixing piece (14) is provided with at least one positioning column (15).
10. The utility model provides a battery package weeping fault monitoring system which characterized in that: the liquid level sensor comprises a battery management system, wherein the battery management system is in signal connection with the liquid level sensor according to any one of claims 1 to 9, and the battery management system feeds back the resistance value of the liquid level sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220851503.XU CN217111058U (en) | 2022-04-13 | 2022-04-13 | Liquid level sensor and battery pack leakage fault monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220851503.XU CN217111058U (en) | 2022-04-13 | 2022-04-13 | Liquid level sensor and battery pack leakage fault monitoring system |
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| Publication Number | Publication Date |
|---|---|
| CN217111058U true CN217111058U (en) | 2022-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220851503.XU Active CN217111058U (en) | 2022-04-13 | 2022-04-13 | Liquid level sensor and battery pack leakage fault monitoring system |
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| CN (1) | CN217111058U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024131634A1 (en) * | 2022-10-21 | 2024-06-27 | 杭州高特电子设备股份有限公司 | Battery liquid leakage detection device with sheet structure |
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2022
- 2022-04-13 CN CN202220851503.XU patent/CN217111058U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024131634A1 (en) * | 2022-10-21 | 2024-06-27 | 杭州高特电子设备股份有限公司 | Battery liquid leakage detection device with sheet structure |
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